Since modern times,due to the natural environment,medical and health conditions,living habits and other reasons,the diseases were prevalent in the region of Inner Mongolia,including fulminating infectious diseases like plague; chronic diseases like syphilis,trachoma; along with many common chronic disorders like stomach disease and rheumatism etc.The high incidence of some of these diseases in Inner Mongolia region,especially plague and venereal diseases,greatly affected the growth of the population of Mongolian ethnic group in modern times,and also seriously hindered the development of social economy in this region.